A visual bi-layer indicator based on roselle anthocyanins with high hydrophobic property for monitoring griskin freshness

Junjun Zhang; Xiaowei Huang; Jiyong Shi; Li Liu; Xinai Zhang; Xiaobo Zou; Jianbo Xiao; Xiaodong Zhai; Di Zhang; Yanxiao Li; Tingting Shen

doi:10.1016/j.foodchem.2021.129573

A visual bi-layer indicator based on roselle anthocyanins with high hydrophobic property for monitoring griskin freshness

Food Chem. 2021 Sep 1:355:129573. doi: 10.1016/j.foodchem.2021.129573. Epub 2021 Mar 15.

Authors

Junjun Zhang¹, Xiaowei Huang², Jiyong Shi³, Li Liu¹, Xinai Zhang¹, Xiaobo Zou⁴, Jianbo Xiao⁵, Xiaodong Zhai¹, Di Zhang¹, Yanxiao Li¹, Tingting Shen¹

Affiliations

¹ Agricultural Product Processing and Storage Lab, School of Food and Biological Engineering, Jiangsu University, Zhenjiang, Jiangsu 212013, China.
² Agricultural Product Processing and Storage Lab, School of Food and Biological Engineering, Jiangsu University, Zhenjiang, Jiangsu 212013, China. Electronic address: huangxiaowei@ujs.edu.cn.
³ Agricultural Product Processing and Storage Lab, School of Food and Biological Engineering, Jiangsu University, Zhenjiang, Jiangsu 212013, China. Electronic address: shi_jiyong@ujs.edu.cn.
⁴ Agricultural Product Processing and Storage Lab, School of Food and Biological Engineering, Jiangsu University, Zhenjiang, Jiangsu 212013, China. Electronic address: zou_xiaobo@ujs.edu.cn.
⁵ Agricultural Product Processing and Storage Lab, School of Food and Biological Engineering, Jiangsu University, Zhenjiang, Jiangsu 212013, China; Nutrition and Bromatology Group, Department of Analytical Chemistry and Food Science, Faculty of Food Science and Technology, University of Vigo - Ourense Campus, E-32004, Ourense, Spain.

PMID: 33799267
DOI: 10.1016/j.foodchem.2021.129573

Abstract

This study designed a new type indicator with hydrophobic Polyvinylidene Fluoride (PVDF) film as a moisture prevent-layer. And the sensor layer was provided based on polyvinyl alcohol/Sodium alginate (PS) and Roselle anthocyanins (RAs). Physical properties, microstructure, and color stability of the bi-layer indicator have been investigated. The Water contact angle (WCA) of PS/RAs/ PVDF film (PSRF) was 108.85°, which can be considered as an excellent hydrophobic surface. The lowest Water Vapor Permeability (WVP) value of PSRF exhibited a good barrier property for moisture. Therefore, PSRF film was used to monitor the griskin freshness. The Total volatile basic nitrogen (TVB-N) level was increased to 18.02 mg/100 g at 72 h, and the color of the indicator presented visible color changes. The acquired results revealed a good correlation between TVB-N, pH and color change of the indicator. The research indicated that PSRF indicator has increasing potential application on food intelligent packaging.

Keywords: Bi-layer indicator; Freshness; Hydrophobic property; PVDF film; WCA; WVP.

MeSH terms

Alginates / chemistry
Animals
Anthocyanins / chemistry*
Colorimetry
Food Microbiology / methods*
Food Packaging / methods*
Hibiscus / chemistry
Hibiscus / metabolism
Hydrogen-Ion Concentration
Hydrophobic and Hydrophilic Interactions
Meat / analysis
Meat / microbiology
Polyvinyl Alcohol / chemistry
Swine
Water / chemistry

Substances

Alginates
Anthocyanins
Water
Polyvinyl Alcohol